Tin is a powerful text mode news reader. It features threaded news reading, regex driven killfiles/message selections, pgp encryption, ispell support, and can read from both a local spool or from a remote NNTP server.

The SeaMonkey project is a community effort to develop an all-in-one Internet application suite. It contains an Internet browser, email and newsgroup client with an included Web feed reader, HTML editor, IRC chat, and Web development tools, and is sure to appeal to advanced users, Web developers, and corporate users. It uses much of the Mozilla source code powering such successful siblings as Firefox, Thunderbird, Camino, Sunbird, and Miro.

Urd is a Web-based Usenet binary download manager. It stores the newsgroup information in a MySQL database and aggregates the articles into sets of a single download (e.g. one album or movie). The Web interface can be used to search with regular expressions. It uses its own downloading daemon that has support for scheduling downloads and updating databases. URD can also download directly from NZB files and even create NZB files. Further features include custom scripts, multiple languages, a template based Web interface, support for multiple servers, automatic par2 and unrar support, and an intuitive user interface.

phpGroupWare (formerly known as webdistro) is a multi-user groupware suite written in PHP. Its provides a Web-based calendar, todo-list, addressbook, email, news headlines, and a file manager. The calendar supports repeating events. The email system supports inline graphics and file attachments. The system as a whole supports user preferences, themes, user permissions, multi-language support, an advanced API, and user groups.

NewsCache is a free cache server for USENET News. NewsCache acts to news reading clients like a news server, except that it stores only those articles that have been requested by at least one client. NewsCache targets problems of the current News System like network bandwidth consumption or the IO load caused by news clients.

The WendzelNNTPd is an IPv6-ready Usenet server that aims to be as easy to use as possible. It is portable, supports AUTHINFO authentication, contains ACLs as well as role based ACLs (RBAC), supports invisible newsgroups, and features automatic prevention of double postings. WendzelNNTPd supports MySQL as well as SQlite3 backends.

stdnoj is a cross-platform C++ class library that
includes classes for using portable strings,
databases, SMTP, POP, NNTP, arrays, files,
directories, logging, email, and sockets. While
templates are used, no reliance upon STL or other
(traditionally error-prone) technologies has been
used, which increases portability between
compilers.

nzb is a binary news grabber. It natively downloads, decodes, and even streams the files specified in the .nzb file, an XML format which describes binary files on Usenet by their message-id. libnzb provides developers with useful nzb processing functions.